Feed device for gas-producers



(No Model.) 4' Sheets-Sheet 1. G. W. BILDT. PEI-3D DBVIGE FOR GASPRODUCERS.

Patented May 30, 1893.

ETERS co.. PNOTO-UTHO, msnmumn. a. c

(No Model.) 4 Sheets-Sheet 2.

G. W. BILDT.

FEED DEVICE FOR GAS PRODUCERS.

No. 498,229. Patented May 30,1893.

(No Model.) 4 Sheets-ShetB. G. W. BILDT. FEED DEVICE FOR GAS' PRODUCERS.

No. 498,229. Patented May 30, 1893.-

WknE E5555; I -E -K 4 "m: NORRIS PETERS c0 mom-Luna, WASHINGTON u. c

(No Model.) 4 Sheets-Sheet 4.

. C; W. BILDT.

FEED DEVICE FOR GAS PRODUCERS. v No.498,229. Patented May 30,1893.

i To all whom it may concern:

UNITED STATES PATENT OFFICE.

CARL WILHELM BILDT,,OF WORCESTER, MASSACHUSETTS.

FEED DEVICE FOR GAS PRODU CERS.

SPECIFICATION forming part of Letters Patent No. 498,229, dated May 30,1893.

Application filed Septembei17, 1892- ,Serial No. N modem Be it knownthat l, CARL WILHELM BILDT,

of the city and county of Worcester, and State" of Massachusetts, haveinvented certain. new and usefullmprovements in Feed Devices forGas-Producers; and I do hereby declare that the following is a full,clear, and exact descrip-j tion thereof, reference being had to theaccompanying drawings, forming a part of this specification, and inwhich i A Figure 1 represents a vertical section through the upper partof a gas producer and my improved feed device applied thereto, withportions of said device shown in elevation. Fig. 2 is a horizontalsection through the upper part of the device takenon line w m, Fig.-

1, looking down and showing a plan of the parts coming below saidsection line. Figs. 3 and 4 are enlarged vertical sections of parts ofthe device hereinafter described, takenat the point indicated by lineas, Fig.2. Fig.5 is a horizontal section upon the same enlarged scale,taken on line-w Fig. 4', showing a plan of the coal-distributing part-ofthe device.

Fig. 6 represents a geometrically constructed spiral line showing theline of distribution ofthe coal by the distributor of my device, whichwill be hereinafter more fully described, and Figs. 7, 8, 9 and 10showmodifications in the construction of the coal distributer, whichwill be hereinafter described.

The object of my invention is to effect a saving in fuel and labor, andalso to reduce the liability of injury-to the workmen from escaping gas.

I It relates more particularly to improvements upon my patentedinvention for a like purpose, dated December 16, 1890, and num-. beredL4E2,676; and consists of a feed device or apparatus, combined with thetop of the gas producer, having acontinuously rotating disk forregulating the feedor supply of coal, and a continuously rotating diskor frame provided with a fan-shaped blade or blades .layerof coal .iskept'in a gas'producer, the better will be the result obtained, owingtothe more even and uniformcombustion there-' by produced.

Prior to my inventions, a commonwayof running gas-producers has been tocharge the coal by hand through 'a hopper.

unethod the coal is not evenly distributed over the surface of the fire,but falls more in one place than another, thus forming layers whichincrease inthickness in different places as the coal is continued to bepouredin. A variation in the composition of the gas is thereby producedin the generator in different parts of the same producer, which alsoresults in the production of an excess of carbonic acid, andothernon-com'bustible from 'thew'aste of coal, isthe escape of gas which isveryinjurious to the workmen.

By this All of the above objections I have found by practicaldemonstration are wholly removed by my invention.

Referring to the drawings,the part marked A represents the vupper'partof an ordinary gas-producer, which, being of, well known construction,requires, no detailed description,

myinvent'ion, as before stated, relating only to the means employed forsupplying the coal thereto. 1B is the coal receptacle which is fastenedcentrally over the producer, tothecover O, or

otherwise as mayberequired in practice. It

.c which extends down into the generating chamber of the producer, andhas mounted on itslower end'the coal distributing, fanshaped blades, E E,which will be hereinafter described. Said rod or spindle is operatedvertically by the hydraulic mechanism above described,and is turned byahorizontal worm gear F, fastened to the rod so that they will turntogether and at the same time permit the rod to slide vertically in thehub of said gear. Over said rod is fitted a hollowshaft or sleeve (1which also extends down into the producer, and has mounted on its lowerend a horizontal disk d, which rests andturns with its sleeveon acentralcollar or hub eat the foot of rod 0. Said sleeve and disk arefree to move up and down with the rod and its coal-distributing blades.

latter, while being permitted toslid eftherein as aforesaid, is alsoturned by thegear. Outside 'of both the rod 0 and sleeve cl betweenl thetwo heriz'ontal gears F H, is arranged short, stationary sleeve g inwhich the upper end or the sleeve cl also slides vertically when;

the rod is raised orlower'ed. The sleeve 01 it willfbe understood issupported by saidrod.l It maybe fitted loose on therodso that its diskmay restjon the hub got the disiribiitemj f d i d: it m y b $D9 l d1Whusesoas to hold the diska little above andout of contact with saidh ub'e, by means of a: collar and screwabove the collar f as is shown inFig.1; or in any other well kn owjn way.

Q'lllre purpose of the foregoing construction, is tofini'pa'rtindependent, continuous,jrdtary, movements to the disk d and tothecoaledisinsur n blades E E,.th'e former being.

turned slowly teproperlyteed the l coahfr'orn the bottom ot'thereceptacle B, andthe la'tterf inorerapidly to properly distributesaidcoal; asitis discharged'outo the blades from said? disk. f I ,Saidblades are preferably corrugated in a vertical directiouas isfshown inthe drawings, toftacilitate the prop rdischarge'of the coal, and dueblade is macaw fiare'or'diverge spirally, while the other convergesspirally; iiciir've of one cofiiijnencing'wiierenie other] I as the coalis discharged thereonjit is distributedtherefr'oiniii continuousspirallines I (see Fig.6) from the outside tofthe center of the surfaceto be distributed upon, and conse-, quently aneven, uniform layerof'fcoal is deposited over thewhole of said surface -the to thoseskilled in the art towhich myinvention belongs.

. fastened to agsuitablehorizontal disk or frame Eiwhich is in turnsecured to the lower end of the rod 0.

Theshape, or number of the blades is not essential, solong as the aboveprinciple is earriedout. Various similar shapes, and one or inorebladesinay be used with substantially the same result.

lhe construction shown in Fig. 5 and the previous figuresof the drawingsrepresent The lower end of the sleeve is guided by and slides in a'suitable bearing f mounted on an arm or brace" f, fastened in this instanceto the coal 'recep-l tacle B; it also slides in a bearingf in the top ofsaid receptacle, and at its upper end, in a bearing f of the supportingframe G, as. well as in the hub of a horizontal worm-gear" H, which issplined to the s1eeve, sothat the advantage of whichwill at'oiice beapparent" The distributing blades are the blades made of similar shapes,except that theyai reversed, or, in other words, one

is convex and the other is concave in shape, each commencing at one endE in a nearly vertical line and flaring outward toward its other end E,as is fully shown in Figs. 4 and 5 ofthe drawings.

In Fig. 7, I have shown the construction adopted in my formerpatentedinvention previously referred to which shows the flaring blade E asoccupying about three-fourths and the converging blade E thereinainingfourth of the circumference of the plate or disk "whichsupports the same, the ends of the blade E being made nearly verticaland her a.

row next to the; blade Ei and widening and daring outward to b thecenter opposite from said bladeE'- Substantially the same result isproduced by be thshap'es of distributing blades, and I therefore reservethe right to 'use either orany shapesuitable fo'r'jtl epurpose.

In Figs. 8 and 9 Ihave shownaside view and plan respectively, of adistributer made with one blade, while in Fig. 10aplanfof a distributerwith fouriblades is shown. either construction the coalwould be evenlydistributed over'thevwhole, surface of the fire, in substantiallytheenemy, the of'nlydifrarefi d between one distri futerand another ofdifferent shape or, nuiuber'of blades being in the line ofjdiscliairgetherefrom, either in a continuous, spiralflinejes shown bytheliue I inFig. 6, or in irregular lines as would necessarily be the caseby the useof several irregularly arranged slantedlbladesas is shown in ni gio. Thesa iisii eii slanting discharging surface would be in iiitalined 'bfytth'eIasteoustruction as by tiieroriiier, butbeiug irregw may d sposedwould discharge the cjoiil iii like manner s'ararcsa d; The idistribution over'thesurface would be as uiiiforrn byione "method as bythe other, birt'forebvious reasons the coustructionisshownin Figs. 1,4,5 and 7 are preferred.. j By the use; in single blade such as shown inFigsQSand 9, it would be necessary, in orderfto" cover the-whole surface(if thefire, to illtik b the distributer and disk d nearly as large'a'sthe diameter of the combustion chambermn account of the shape of 'theblade vwhich ce nrnences in a vertical line at a given point,and slantsgraduallyjinward 'to the widest point inp' lan view, next tosaidvertical point, as is shown in Fig. 9.

For prod ucers o'f. small size a singleblade might be usedadvantageously, but for the larger sizes, two or more 1 blades, 'fiaring both outward and inward, andthus adinittiug of the distributer beingmade of smaller diameter, arepreferable'.

'lheaniount of coaldischarged from the receptacle is regulated bychanging the speed ofthe disk (1, or by raising orl owering said disk dto decrease or increase the space becoal receptacle, which is done byraising or lowering the rod cthat supports the same, in

. tween the top thereof and the bottom of said like manner to raisingand lowering other hydraulic piston rods, and thus requires no specialdescription. In thus regulatihgthe distance for the feed, the collar 0on rod cis first loosened by unscrewing its set screw 0 and the rodraised or lowered as required, and then said set-screw is turned upagain to hold the parts in their newly adjusted positions.

The mechanism for driving the gears F, H may be arranged and constructedin various ways, and I therefore do not limit myselfl'to any specialconstruction.

The driving mechanism shown in'the drawings is constructed and arrangedas follows?- Upon horizontal drive-shafts h 'i fitted ,to turn insuitable bearings in frame Gare secured worm-wheels j (onlyone of whichis shown in Fig. 2 of the drawings, the other coming directly under thesame), which engage with gears F H. A cone-pulley 1c is also secured onthe outer end of the horizontal shaft t which is connected by a suitablebelt 1 with a similar cone-pulley It, on horizontal shaft m which isfitted to turn in suitable bearings in frame G, and is operated by thepulley n on its outer end. The shaft h is driven in a similar manner toshaft 11 except that the gears 0 p are interposed between said shaft andthe cone-pulleys I0 lo f-the larger of the two gears 0 being secured toshaft h and the other (which meshes with gear 0) to one end of the.

shaft q upon which is mounted pulley 70 the drive-pulley r correspondingto pulley n,

' being secured to the outer end of said shaft 70 Pulleys n 4" may beturned by any suitable driving mechanism connected therewith. g

In practice the mechanism for. turning the rod 0 and sleeve d isconstructed and arranged, and the various parts so timed. in relation toone another, as to operate the disk (1' (which regulates the quantity ofcoal discharged) with a slow, continuous, rotary movement, or at suchvelocity as may be required to keep the coal in motion and properlydischarge it onto the distributing blades; and to operate said bladesalso continuously at the proper increase in speed over the disk, todistribute the coal evenly and continuously over the whole surface aspreviously described. n

As is well known gas producers charged by hand require fresh coal tobesupplied at oer-- tain intervals,-about ten to twenty minutes,whereas,by the application of my in.- vention, the coal being continuously fedfrom a large receptacle which may belarge enough to contain a car-loadof coal, requires 'to be filled only at long intervals. It is,therefore, obvious that a large saving in laboras well as fuel iseifected, and being charged at long intervals less opportunity isafforded for the escapeof gas,th us rendering the attendance upon theproducer not only more comfortable, but much less injurious to theworkmen. A

By the use of my invention larger gas producers may be employed thanwhen charged by hand, as the coal mayfbe distributed equally dependentspeed from the distributor.

"means of mechanical appliances, and I there- 'Letters Patent, is-

vas well over either a large ora smallsurface.

It is also obvious that although the'di'stributer is designed moreespecially for feeding the coal to gas producers, it may be used withplaces.

The main oressential feature of my invention consists in combiningacontinuously rotating distributer run at a given speed, with Iahorizontal disk arranged between said distributer and the coalreceptacle, run at an in- Although I prefer to combine mechanism withthe distributer shaft for elevating and lower- 'ing the same asdescribed, it not being an es sential feature to the carrying out of myinvention, I reserve the right to employthe .ingthe same, to control thesupply of coal from the-coal receptacle to the distributer, similar tothat herein shown and described.- for elevating and lowering saiddistributor. As said modified construction will be readily understoodfrom the above description, it is deemed unnecessary to illustrate thesame.

I am aware that it is not broadly new to distribute or spread the coalin a furnace by fore limit my invention'to substantially the.construction herein set forth. Having now described my invention, whatsame or not, as desired. It not ,used,the ro-,

I claim therein as new, and desire to secure by I 1. A gas producer orsimilar apparatus, in

combination with an automatic distributing I device comprising thefollowing elements; a

ducerand having suitable supply and discharge openings, a rotatingdistributor arreceptacle or hopperarranged over the 'prochambenmeansforturning,and elevating and lowering said 'distribu'ter;fa horizontal,rotating disk arranged and supported between the receptacle. orhopper-and distribu ter, and means for rotating said disk independent ofthe distributer, .Substantiallyas and for the purpose set forth.

2. In a feed device for gas producers or similar apparatuses, a rotatingdistributor arranged under the hopperor receptacle and above the bedupon which the deposit is made; said hopper or receptacle, andmeans forroits tating'said distributer, in combination with a horizontal,rotating disk arranged between the receptacle and distributer, and meansfor rotating the same independent of said distributer, substantially asand for the purpose set forth. v

3. The combination with a gas producer, of acoaldistributingdevice,'consisting of a coal receptacle'or'hopper secured in positionover said producer and having suitable supply and discharge openings thecoal distributing blades E E secured to the lower end of a verticalshaft 0 in the combustion chamber-of the pr0ducer,one blade flaringoutward and the other converging inward as described; said shaft 0 andmeans for rotating, elevating and lowering the same; the horizontal diskd arranged between the distributing blades and the bottom of the coalreceptacle or hopper and secured to the lower end of sleeve (1, and saidsleeve fitted over shaft 0 and having 10 means for rotating the sameindependent of the shaft, substantially as set forth.

CARL WILHELM BILDT. Witnesses:

A. A. BARKER, WV. B. NOURSE.

